<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        // 值用引号引起来的都是字符串
        var num="123456";
        console.log(typeof num);
        // 空字符串
        var nothing="";
        console.log(nothing);
        // 转义字符
        var content="我是\"张三\"";
        console.log(content);
        // 换行字符
        var  warp="我需要换行\nlalallal成功没有";
        console.log(warp);
        var a=123;
        console.log(a);
        
    </script>
</body>
</html>